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Finding the Fourth Proportional to 6,488.77, 8,954.26 and 3,969.94

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Solution

The fourth proportional to 6,488.77, 8,954.26 and 3,969.94 is: 5,478.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,488.77 : 8,954.26 = 3,969.94 : x
  2. Step 2: Convert to fraction form
    6,488.77/8,954.26 = 3,969.94/x
  3. Step 3: Cross multiply
    6,488.77x = 8,954.26 × 3,969.94
  4. Step 4: Simplify right side
    6,488.77x = 35,547,874.94
  5. Step 5: Solve for x
    x = 35,547,874.94/6,488.77
  6. Step 6: Final answer
    x = 5,478.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.